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  1. AnodizingRI

    Alternative to Sulfuric acid

    Citric acid may be worth a try. You can get small amounts (1 lbs) for about $5 from various websites.
  2. AnodizingRI

    Anodizing: Treatment of Combined Etch and Anodize Bath Wastes?

    Hello everyone! I've been having some troubles in waste treatment here in RI and was looking for some wisdom. An Etch bath (containing mostly sodium hydroxide, sodium aluminate, and aluminum hydroxide) was recently dumped into a waste tank and my infinite genius decided to neutralize the pH of...

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